Ore-separator.



l. E. NELSON.

ORE SEPARATOR.

APPLICATION man NOV. 1. 1911.

1, 179,744. 7 Patented Apr. 18, 1916.

4 SHEETS-SHEET I.

wwwwow I E. NELSON.

ORE SEPARATOR.

APPLICATION FILED NOV. 1, 1911.

Patented Apr. 18, 1916.

k 2 m Mn w Moo Lm M m a M0 wfi M W 7 9 n 1 I. E. NELSON.

ORE SEPARATOR.

APPLICATION FILED NOV. 1. 1911.

1,1 79,744. Patented Apr. 18, 1916.

. 4' SHEETS-SHEET 3.

awe/1411010 Jam 7741101;

Wow;

I. E. NELSON.

ORE SEPARATOR.

APPLICATION FILED NOV. 1.15m.

Patented Apr. 18, 1916.

4 SHEETS-SHEET 4- iZe/aow THE COLUMBIA PLANDGRAPH C0., WASHINGTON. c.

IVAN E. NELSON, OF SANTA CLARA, CALIFORNIA.

ORE-SEPARATOR.

Specification of Letters Patent.

Patented Apr.,18, 1916.

Application filed November 1, 1911. Serial No. 658,022.

To all whom it may concern:

Be it known that I, IVAN E. NELSON, a citizen of the United States, residing at Santa Clara, in the county of Santa Clara and State of California, have invented certainnew and useful Improvements in Ore- Separators, of which the following is a specification.

This invention relates to improvements 1n ore separators and especially that type known generally as dry washers, or devices in which air is employed to promote the separation.

One of the objects of the invention is to provide a device of this type'witha series of screens and riflies and means for collecting the fine gravel and sand to assist the elimination of the gold, by jets of air, or suction pipes creating air jets. I

With the above and other objects in view the invention relates to certain combinations, constructions and arrangements of parts, clearly described in the following specification and clearly illustrated in the .accompanying drawings in which,

Figure l is a side elevation partly broken away of the improved separator. Fig.2 is a top plan view. Fig. 3 is a detail sectional view of a collecting plate for sand. Fig. 4: is a fragmentary sectional plan view illustrating the vibrating means. Fig. 5 is a detail sectional view on an enlarged scale showing the arrangement of the riffies and a part of therocking means. Fig. 6 is a. detail plan view of the bottom of one of the air section hoods. Fig. 7 is a longitudinal vertical sectional view through a screen, hood and hopper.-

Referring to the accompanying drawings illustrating the preferred form of the invention 1 denotes the base of the machine and 2 a suitable ore hopper. The hopper 2 feeds to an elevator belt 3, which is movable over wheels 4, journaled on the frame members 1. The belt 3 has a plurality of ore buckets which are adapted to deliver ore to a chute 6, which leads to a hopper 7. Thehopper 7 is supported over a screen 8, and

the screen 8 is supported over a second screen 9, and the screen 9 is supported over a third screen 10, which third screen is supported over a collecting plate 11.

' The screen 8 is arranged over a hopper 12, I

which is adapted to deliver material passed through the screen 8 to the screen 9, which screen 9 is arranged over a hopper l3, wh1ch delivers material passed through the screen 9 to the screen 10, which screen 10 is arranged over a hopper 14, which delivers material passed through the screen 10 to the collecting plate 11.

The hoppers are covered by hoods 15 on which riftle plates 15 are arranged, each .rifile plate being provided with an inwardly curved upper edge. The rillles are arranged in steps, .as shown in Figs. 1 and 5. Between the rifiies on the'hoods adjacent the two upper screens mercury is arranged to collect gold in the usual way, while over the hoods adjacent the lower screen and collecting plate suction tubes or pipes 16 are arranged, their inlet ends being provided with hoods 17, which are open at their ends and at their bases and are supported above the hood or plate- Y The pipes 16 are connected to the air tank or suction chamber 18 which communicates by a pipe 19 with the interior of the suction casing fan 20, which is operated by asuitable belt or other means. The tank 18 is provided with a suitable delivery point or end, whereby the'sand can be taken from the tank. I

A vibrator shaft 22 is j ournaled at its ends to the frame 1 and, is driven by a belt 21. Brackets 23 hold the shaft 22 rigidly on the frame 1. Eccentrics 24 are mounted on the shaft 22 andeccentric straps 24 are arranged on said eccentrics and are connected by means of the rods 24: with the yokes 29, the terminals of which connect with vertical arms or rods 29 which are secured to the frame 29 for supporting the screens and plate 11. The frame 29 is connected to parallel angle bars 28. Horizontal supports 25 are arranged on the frame 1 and angular rods 27 are secured to said supports, and on the upper free ends of said rods rollers 26 are arranged. These rollers 26 are adapted to normally bear against the outer surfaces of the angular bars 28 carried by the screen frames 29. When the shaft 22 is rotated the openings of thisscreen will fall upon the collecting" plate 11, designed principally to collect sand. The material falling into the spaces between the riffieson the screen plate 10 and on the collecting plate 11 will be drawn into the tank 18 by the pipes; 17', the terminals of which are disposed on different planes and which are of different lengths, as shown in F igsal and-2'." In this way'the use of water is dispensed with; v

' Having described my inv'enti'onI claim 1 In anore separator, a supporting 'Inemher, a screen carriedthereby and riflies in series disposed on the Tsanie" around-said 1 screen and 'suctiontubes arranged over said rifles:

2. Inan ore separator,a s'up'porting 'I'ne'nr ber, a scree'n carried by the same, and riflies around 'said- "screen, said riiiles having in w'ardly curvedupper'edges' and arranged in steps'and suction tubes arranged 'oversaid '3. In an ore separator, ajsupporting meniher, a screen carried 1 by the-Sallie, riflie's around said screen and hoppers provided with hoodsfon which said rifile's are varranged, and suction-tubes supportedabove said screen. 1 41 met. In an ore separator, a supporting memher, a screen carriedby the same, riffies around said 7 screen and hoppers provided with hoods on which --'said riflies' are ary ranged, and suction tubes provided with m ager their "inlet alas" and supported abov sa d,,.sc e na a. series of hoppers thereover, hoods for said h'o-pp'ers, and riflie plates arranged around the hoods and supported by said hoods, said rifile plates being arranged in steps and each p'rovided' with inwardly curved upper edge and suction tubes over the hoods and adlacentthe' rifiieS-Q 1f i I (SJ-Infan ore separator,aseries of screens, aseriesof hoppers thereover, hoods for said hoppers, and riflie' plates arranged around the san1e,- each rifile plate being provided with 'an' inwardly curved upper edge, sue

- 5. Inan ore separator, a series of screens,

tion' tubes over'said hoods and provided with hoods at their inlet ends.

\ 7. In an ore separator,-a series ofscreens,

a series of hoppers thereover, hoods for said hoppers,- and riflie plates arranged, around the same, each rifile plate being provided with an inwardly curved upper-edge, said riflle platesbeing arranged in steps, suction tubes over said hoods and provided with:

hoods at their inletends; v v 8. In an ore separator, a hopper, ascreen arranged over the saine, a hood "for said hop? per, rifile' plates arranged Jon "said 'hood,

eachriflle plate having-an} inwardly curved e H upper edge, said riffl'esbeing' arranged in i steps, a .Series of suction tubes over said 'hoodadjacent the screen, andjhoods. for the-inlet 1 ends of said tubes, said hoods being open at their ends and-basesand supported, above 1 In testimony p in presence of two .wltnesses."

whereof I aiiix-my v IVAN E ELsQN; p

'7 Copies of thispatent may" be obtained for five cents each, by addressing the Com mis's!oncr erra um 3 i washingtomD 'c. i 1 i 

